([email protected] to bcc, [email protected]) On 16 March 2016 at 10:06, Jim Apple <[email protected]> wrote:
> I'm sure everyone will be delighted to have more communication and > cooperation, including reading the papers and the code. Can you share those > today, or is that part of the "puzzle" of "sharing intermediate results"? > Is there anything we can do to help with your puzzlement? > > On Wednesday, March 16, 2016 at 12:11:05 AM UTC-7, 林言 wrote: >> >> Dear Sir/Madam： >> Hello! I am Yan Lin, a master candidate in ZheJiang >> University(CHN) in laboratory "PCL" (http://percom.zju.edu.cn/). Our lab >> has done many works on Impala, as follows: >> 1. We proposed an Impala query optimization method based >> on bushy-tree and an IMPROVED-MCCHYP algorithm [1]. And we implemented >> our method and algorithm in Impala. >> 2. We proposed a replication-selection based scheduling >> algorithm and implemented it in Impala [2]. >> 3. Some of my fellows are now developing a simulator of >> Impala called ImpalaSim and writing the corresponding paper [3]. >> Recently, we put our focus on multi-query optimization which >> sufficiently exploits >> common sub-expressions of batched queries and improves the efficiency. We >> have modified some source code, and the modified Impala can already >> execute multiple queries in the same query context. But we still feel >> puzzled with sharing intermediate results. We hope for more >> communication and cooperation in every aspect. We all want a better >> Impala. >> Thank you for your attention! Hope to hear from you soon! >> >> >> Yours Sincerely, >> >> >> Yan Lin >> >> Reference: >> [1] >> Bushy Tree and Improved-McCHyp Algorithm Based Impala Query Optimization >> [2] >> Replication-Selection based Scheduling for Impala Parallel Query Execution >> [3] ImpalaSim：Discrete Event Simulation Platform for Impala >> System >> ------------------------------ >> Yan Lin >> > -- > You received this message because you are subscribed to the Google Groups > "Impala Dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > -- Henry Robinson Software Engineer Cloudera 415-994-6679
